Means for supplying fuel to furnaces



Jan. 6, 1931.

J. F. GoGELElN ET AL 1,788,289

MEANS FOR SUPPLYING FUEL TO FURNAGES Filed Jam. 1o. 1930 Patented Jani le, V193,1' f

' i .UNITED PATENT 'OFFICE JOHANNES r. GosELEINmFsoERABAIA,AND -conNELis .1. F. sonooNiniBEi-mf, yois' f sI'roEBoNDoJAvA: Y "i MEANS Fon SUPLYINGKFUEI; rro FURNAcEs `Application 1 11ee1Ja`nuary-1d'193o, serial-N0. 419,963, and in the Netherlanaarahuary 15, 1928.y

This invention relates to full-automatic Vmeans for supplyingfuel such as bagasse, peat, saw-dust etcgto Aa furnace, Amore espec iallyto aboiler furnace. 5 v Various suggestionshave been madefto mechanically supply bagasse to a'boiler furnace, but as far aswe are aware, the ratey of` feed in said known yd evicesfcan only be controlled -by hand.v Since the yamount offuel to be sup-y L,lo plied per unit oftime is variable and dependent, inter alia, upon vthe chimney draft, the caloric value ofw the fuel (which y especially with bagassevaries lwithin wide limits): andV the condition lof the lire amount ofclinker l on the grate), such a mechanical-Stoker obvi- -ouslyrequires to be repeatedly adjusted.v

The object ofrk our present invention isto avoid the necessity ofmanually` adjusting the rate offeedgand to automaticallyv control said i rate responsiveto requirements.. "Withthis object in view, we suggest to provide a charging receptacle mounteddirectly in front of and in communication with the furnace vmouth and adapted for vertical displacement linder'r'the infiuence of gravity, in combina- .tion` with VaV conveyor. or the, like for supplying' fuel to said receptacle and` with means operatively coupling the driving mechanismofithe conveyor with the receptacle in such a V, manner that vertical displacement of there- 5 the fuel accumulated therein ceptacle controls thespeed of theconveyor, i. e. :the rate of feed.,v In mostcasesit'will suiice to Vsimply allow thefsaid receptacle to stop the conveyor whenever the weight of exceeds a predetermined value.. Y

In order that our invention may 'be fully understood we shall now `proceed to describe the same with reference to thefanneXedmore 40 or Vless diagrammatic drawing, which illus-K tratesby way of yexampley only a preferred embodiment thereof in elevational section.

B symbolizes one' of abattery of boilers, l

a carrier or other yconveyor of any suitable/or n.145 'y approved construction; extending horizontally, alongdthe front .of saidbatteryand spaced a suitablev distance apart therefrom. Saldk conveyor' receives fuel, for instance, bagasse, from an elevator or the like, not* shown.. Provided in front of ,each boiler B and` vertically below the conveyoiilis a bunkerefwhich is continuously kept filled `,with bagasse by said conveyor. This bunker discharges the fuel, in a layer of predetermined thickness, r.onto a second conveyor 3,

which carries Aittowardsthe boiler in the direction of thela'rrow. The cross sectionalarea ,of the ldischarge opening7 formed .between the front wall Il of thebunker Zand the upper part ofthe conveyor 3, can be adjustedV by l meansof a' slide valve 5.-V The remaining alls ofthe bunker extend close to said upvThe conveyor v3 is driven vby'a armll "loosely mounted on the shaftl?l of the tion is impartedY to arm 11 through the rod l5 of an eccentric 14 mounted .on a driving shaft 13 located at the rear side of the conratchet wheel 9 eooperatlng with a ratchet lOpivoted toan front drum of said conveyor. Swinging moi i veyor 1. A s long as the ratchet l0 engages the ratchet wheel 9,-forward swinging mo! tion of arm 11V willy cause the said wheel to Arotate `the drum of the conveyor 3 through A a' predeterminedkangular distance, whereby a suitable amount of bagassewill be supplied t0 the .Chute e.k

The bagasse inthe chute 6 moves hy gravity i to thefurnace mouth 8, the rate of feed being` entirely dependent lupon the` amount of fuel` consumed inthe furnace, it being understood that the slide-valve should be so adjusted d as toalways allow a sufficient amount of bagasse Vto-bedischarged onto they carrier 3 tosupply the chute 6 with the required quangravity pull of a counterweight 18V resting on aplatform 16. If, however, owing to re- Y duced consumption of fuel in thefurnace, the amount of bagasse accumulated in the pivotally mounted chute 6 rises .above said'level S1, the chute 6 swings downward through a small Yangular distance, pulling the counter-v weight 18 upward until assuming its eXtreme -position 6l `determined. by an abutmentA As a consequence of this downward swinging.

'motion of the chute, the 'ratchet 10 iscausedmnieehanism in such a, manner that vertical to disengage the ratchetwheel 9.V This is efv.

fected, in the embodiment shown, by a chain 19, the lower end offwhicli is secured-*to the upper end of the pivoted chute 6, whereas its.

other endengages'the tail of the ratchet '10 in such amanner that suflicient pull on chain 19 willvforce the pawl 10- out Vof engagement Awiththev ratchet wheel against the actionof a spring 2O,k which tends tofkeep the Yratchet inoperative engagement therewith.` It will be understood tliatthe conveyor 3 will thenV be stopped and the supply of bagasse tothe chute 6 interrupted. i f Y;

Also in its lower position 6'( the chute 6has sufiicien't inclination to o allow the` bagasse accumulated therein to slide by gravity intothe furnace, so that, after a certaintim'e,l the amount of fuel insai'dchutefwill decrease toV a suflicient degree to allow'the' counter- 'wei'ght 18 to again `pull the chute, into its normal position 6', whereby the chain 19 'is slackenedand spring again forces ratchet 10 into `Aengagement with its ratchet wheel.y

As Ashownon the drawing, the chuteI 6 eX- tends a certain distance,` above level'S1,'so that'the fuel therein can rise to an appreciably higher level S2. Therefore, even if' there -is considerable frictional resistance or clearance in the parts through which chute 6 is operatively coupled 'with ratchet 10, the latter is positively disengaged fromA its ratchet wheel 9` before the fuelv can overliow the" chute. 7

e In the embodiment shown, the arm 1l` has an elongated Vslot 11a, whereas the eccentric rod 15 engages a Ypin 15a extending' into said slot and adapted to be secured in any'V desired position therein, so that the operative length of arm 11th`at is to say its angular stroke yand consequently the speed of the conveyor 8' can be adjusted to suit requirements. YVith this arrangement, dispensed with.

1. Means rfor supplying jfuel such1 as ba'gasse, peat, saw-dust or the like to a furthe, slide valve 5f could be the influence of gravity, means-for supplying fuel 'to said receptacle, and means operatively coupling said'fuel supplying means with said receptacle in such a manner that vertical displacement of the receptacle controls the rate of supply.

`2. In means for supplying fuel such as lbagasse, peat, saw-dust or the like to a furnace, a receptacle mounted opposite and in communication with the furnace mouth and arranged for vertical displacement i under theinfluence of gravity, a yconveyor for sup- -plying fuel to said receptacle, driving mechanism for said conveyor, and means operatively coupling said receptacle with said driving displacement ofthe `receptacle controls the rate of speed of said conveyor.

means for* supplying fuel-"such as bagasse, peat, saw-dust and the `lilreto aV fur-` nace, an inclined chute merging into the furnace mouth and mountedforvertical swinging motion `relative' thereto, means such yas .a counterweight tending to keep said chute in an upper inclined osition,`a conveyor for .supplyingfuel to said chute, a driving shaft, ymeans operatively couplingsaid shaftwith said conveyor, and means adapted under the influence of downward swinging motion of ,said chute to disengagesaid shaft from said (i5 conveyor.

foo

4. vIi'iwmeans I forzsupplying kfuel such :as jbagass'e, peat, saw-dust andthe like to av furnace, an inclined chute merging into the `furnac'emouth and mountedfor vertical swing- L 100 ing'motion relative thereto, means such as a counterweight tending to keep said chute in pan upper-inclinedposition, a. vconveyor for supplying fuel to said chute, aratchet'wheel adapted to drivesaid conveyor, a driving ,isha-ft, an offsetpart vsuch as an eccentric on said shaft, a rod associatedwith said offset part, a lever adapted for swinging movement about thefaxis of said ratchet wheel and as sociated with said rod, ratchet pivotally mountedon said lever, means'such as a spring tending tolreep said ratchet in operative engagement with said ratchet wheel, and means such asachainl connecting said chute with said ratchet. in such amanner that downward `11g;

swinging motion of said ychutetends to disengage said ratchet from saidvratchet wheel.

5. In Ymeans for supplying fuel such as bagasse, peat, saw-dust and the like to a furnace, an inclined Vchute merging intothe furnace mouth and mounted for vertical swing- "ing motion relative thereto, means suchas a counterweight tending to keep said chute in an upperinclined position, an abutment positively 'preventing said chute from' swinging 125 downward beyond' a lower'inclined position, a-conveyor forsu'pplying fuel to said chute,

a fratchet wheel adapted to drive saidconveyor, a driving shaft, `an oifset part suchas 'an eccentric on said shaft, a rod associated 180 with said oiset part', a lever adapted for swinging movement about the axis of said ratchet wheel and associated with said rod, means for adjusting the operative length of said lever, a ratchet yprovided to said lever, means such as a spring tending to keep said ratchet in operative engagement with said ratchet wheel, and means such as a chain connecting said chute withy said ratchet in such a manner that downward swinging mo-j tion of said chute tendsto disengage said ratchet from said ratchet wheel. Y f

tures.

JOHANNES F. GOGELEIN.

CORNELIS J. F. soBOONENBERG.` i

In testimony whereof we aix our signa- 

